About the Company

Gemini is a global crypto and Web3 platform founded by Tyler Winklevoss and Cameron Winklevoss in 2014. Gemini offers a wide range of crypto products and services for individuals and institutions in over 70 countries.

Crypto is about giving you greater choice, independence, and opportunity. We are here to help you on your journey. We build crypto products that are simple, elegant, and secure. Whether you are an individual or an institution, we help you buy, sell, and store your bitcoin and cryptocurrency.

At Gemini, our mission is to unlock the next era of financial, creative, and personal freedom.

In the United States, we have a flexible hybrid work policy for employees who live within 30 miles of our office headquartered in New York City and our office in Seattle. Employees within the New York and Seattle metropolitan areas are expected to work from the designated office twice a week, unless there is a job-specific requirement to be in the office every workday. Employees outside of these areas are considered part of our remote-first workforce. We believe our hybrid approach for those near our NYC and Seattle offices increases productivity through more in-person collaboration where possible.

The Department: Acquisition & Activation

The Role: Software Engineer (Mobile)

Our mobile engineers are experts at making Gemini's mission clear and accessible to our customers through intelligent development of well-designed visual elements. An ideal candidate will have a strong aptitude for identifying opportunities to improve user experience, experience translating design frameworks into code to improve the Gemini mobile app, and a proactive desire to collaborate with fellow developers, designers, and marketing managers to present a shared artistic vision.

Responsibilities:

• Focus on leading technical decision making building highly complex, highly trafficked, consumer facing web services
• Build elegant and efficient maintainable solutions in React Native
• Collaborate with product managers, designers, and backend engineers to design and deliver high-quality products on iOS and Android
• Act as the go-to expert in with an increasingly strategic mindset
• Drive technical innovation, processes, and best practices required to deliver best-in-class mobile applications
• Lead and mentor a high-performing team of engineers

Minimum Qualifications:

• You have 2+ years of React Native experience
• You have 4+ years of frontend/mobile development experience
• You are comfortable working with Typescript and/or Javascript, but also not afraid to jump into Swift or Kotlin as needed
• You have a strong understanding of UX/UI concepts and a demonstrated record of design sensibility
• You have knowledge of mobile best practices and stay informed about innovations in the mobile industry
• You have experience writing unit tests with Jest and React Native Testing Library

Preferred Qualifications:

• Experience working with Bitcoin, Ethereum, and/or blockchain technology a huge plus
• Experience with using Storybook for UI component documentation
• Experience with React Native Reanimated
• Knowledge of unit and integration testing
• Knowledge of accessibility best practices
• Able to change direction quickly based on shifting company needs

• Competitive starting salary
• A discretionary annual bonus
• Long-term incentive in the form of a new hire equity grant
• Comprehensive health plans
• 401K with company matching
• Paid Parental Leave
• Flexible time off

Salary Range: The base salary range for this role is between $120,000 - $150,000 in the State of New York, the State of California and the State of Washington. This range is not inclusive of our discretionary bonus or equity package. When determining a candidate’s compensation, we consider a number of factors including skillset, experience, job scope, and current market data.

At Gemini, we strive to build diverse teams that reflect the people we want to empower through our products, and we are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status. Equal Opportunity is the Law, and Gemini is proud to be an equal opportunity workplace. If you have a specific need that requires accommodation, please let a member of the People Team know.

#LI-AA1

We're looking for a developer with hands-on experience in React Native, with a portfolio that showcases mobile applications that have great user experiences or solved complex problems. Experience in fintech or another fast-paced industry is a plus.

Responsibilities:

• Write clean, maintainable, and well-documented code.
• Develop new features from provided requirements and UX designs.
• Debug and resolve technical issues, bugs, and performance bottlenecks.
• Stay up to date with the latest trends and best practices in mobile app development.
• Contribute to architectural decisions and technical design discussions.

Requirements:

• Considerable amount of experience in React Native / Expo development.
• Strong proficiency in Typescript and React Native development tools.
• Familiarity with RESTful APIs and asynchronous programming.
• Solid understanding of mobile app architecture and design patterns.
• Basic knowledge of native Android and iOS development is a plus.
• Basic understanding of web3 and blockchain technologies is a plus.
• Experience working in a Scrum/Agile development environment.
• Excellent problem-solving and communication skills.
• Ability to work independently and as part of a fast moving team.
• A passion for learning and staying updated with emerging technologies.
• Experience with react-query or gifted-chat is a plus.

Company Overview:

Quantinium is an innovative blockchain startup building the internet of the future. We are creating a global, wireless, decentralized network where users can become network providers by reconfiguring their routers. This system enables seamless connection to a secure worldwide wireless network, rewarding providers with tokens for contributing bandwidth. Our mission is to decentralize connectivity, enhance digital security, and democratize access to the internet, creating a more open and equitable digital landscape.

Job Description:

We are seeking an experienced React Native Mobile App Developer to join our dynamic team. You will be responsible for building and maintaining mobile applications for both iOS and Android platforms that support our decentralized network. You’ll also work closely with PMs, designers, backend developers, and blockchain experts to deliver robust, scalable, and user-friendly mobile solutions.

Key Responsibilities:

• Develop and maintain Quantinium's mobile applications for iOS and Android using React Native.
• Build mobile apps for WiFi users and network providers, integrating Web3 functionalities (e.g., blockchain wallets, decentralized apps).
• Collaborate with backend developers to integrate apps with services built in Go, ensuring smooth functionality and performance.
• Work with databases and cloud services (e.g., MongoDB, AWS) to optimize apps for speed, scalability, and security.
• Implement responsive designs, animations, and micro-interactions to enhance user experience.
• Participate in code reviews, contribute to shared code libraries, and improve architecture and development processes.
• Stay updated on emerging technologies and trends in mobile development, Web3, blockchain, and decentralized networks.
• Work cross-functionally with product managers, designers, and blockchain developers to align on requirements and deliverables.

Qualifications:

• 3+ years of experience in mobile app development using React Native.
• Extensive experience (5+ years) in building and scaling large mobile applications for mass usage.
• Proficiency in developing for both iOS and Android platforms using React Native.
• Familiarity with Go-based server structures, backend integration, AWS cloud services, and MongoDB databases.
• Strong understanding of responsive design principles, mobile animations, and cross-platform compatibility.
• Knowledge of security best practices, performance optimization, and mobile user experience.
• Ability to work collaboratively in a fast-paced startup environment.
• Strong problem-solving, communication skills, and a proactive attitude.
• Experience with Agile development practices and cross-functional collaboration.

Nice to Have:

• Contributions to open-source projects or experience maintaining libraries and frameworks.
• Hands-on experience with Web3 technologies, including blockchain wallets and decentralized applications.

Additional Technical Skills (Optional):

• Proficiency in JavaScript and TypeScript, including asynchronous programming.
• Experience with RESTful APIs, offline storage, and third-party libraries.
• Familiarity with unit testing, integration tests, and debugging using tools like Jest and Enzyme.
• Knowledge of UI/UX design principles, ensuring the technical feasibility of designs.

Why Join Quantinium?

• Be a part of an ambitious startup shaping the future of the internet with blockchain technology.
• Collaborate with a passionate team eager to make a global impact.
• Enjoy a flexible, remote-friendly environment with opportunities for growth.
• Competitive salary, equity options, and benefits package.

About the Company

Gemini is a global crypto and Web3 platform founded by Tyler Winklevoss and Cameron Winklevoss in 2014. Gemini offers a wide range of crypto products and services for individuals and institutions in over 70 countries.

Crypto is about giving you greater choice, independence, and opportunity. We are here to help you on your journey. We build crypto products that are simple, elegant, and secure. Whether you are an individual or an institution, we help you buy, sell, and store your bitcoin and cryptocurrency.

At Gemini, our mission is to unlock the next era of financial, creative, and personal freedom.

In the United States, we have a flexible hybrid work policy for employees who live within 30 miles of our office headquartered in New York City and our office in Seattle. Employees within the New York and Seattle metropolitan areas are expected to work from the designated office twice a week, unless there is a job-specific requirement to be in the office every workday. Employees outside of these areas are considered part of our remote-first workforce. We believe our hybrid approach for those near our NYC and Seattle offices increases productivity through more in-person collaboration where possible.

The Department: Credit Card

The Role:Software Engineer (Mobile)

As an engineer on our mobile team, you’ll architect and solve complex problems that will directly influence the direction of the credit card space. There's a wide range of challenges to tackle – from ensuring the secure handling of millions of dollars worth of customer transactions, to developing innovative new credit card features, to optimizing our API response times to enhance the customer experience. We have a strong culture of code reviews, and a focus on security, with the end goal of writing and shipping high-quality code by getting things right the first time. As we scale and grow our business, we are committed to building the best credit card products in the industry. If you get excited about solving technical challenges that directly impact our customers, and the rest of the Gemini team, we’d love to hear from you.

Responsibilities:

• Collaborate with product managers, designers, and other engineers to design and deliver high-quality products on iOS and Android.
• Build efficient and reusable UI components and architect reliable, performant, and maintainable solutions.
• Lead teams that continuously build, ship, learn, and iterate.
• Drive technical innovation, processes, and best practices required to deliver best-in-class mobile applications.
• Mentor and develop a high-performing team of engineers.
• Independently scope and implement solutions for their project/team.
• Be an expert in our processes, also helping to define them. Keeps tests up to date and conducts QA before releasing products with cross functional teams.
• Write meaningful code reviews.
• Handle open-ended problems and ambiguity well.
• Make well-reasoned design decisions, identifying potential issues, trade offs, risks, and the appropriate level of abstraction.
• Proficient in all relevant technical skills, and able to move quickly because of deep understanding of large portions of the codebase.
• Lead and coach within their team where possible, trusted with team decisions.
• Start to broaden impact. Consider effects of their work on other teams, as well as identifying and helping to resolve problems facing the team.
• Contribute to the foundational good of their domain and engineering overall, defining patterns and examples, plus paying down tech debt.
• Maintain awareness of industry trends and tools.
• Debug expertly within their primary focus area.

Minimum Qualifications:

• You have at least 2-3 years of experience building mobile applications.
• You have at least 2 years experience using React Native to build cross-platform mobile applications.
• You have at least 1-2 years of experience with E2E and unit testing.
• You are comfortable working with JavaScript/Typescript, but also not afraid to jump into Swift or Kotlin as needed.
• You have knowledge of mobile best practices and stay informed about innovations in the mobile industry.
• You have a strong understanding of UX/UI concepts and a demonstrated record of design and product sensibility.

Preferred Qualifications:

• Expertise in unit and integration testing.
• Experience working with performance analysis tooling.
• Experience working with Fastlane and/or build automation tooling.
• Experience influencing product decisions with data.
• Experience working autonomously with distributed teams.
• Embraces big challenges as opportunities for growth.
• Able to change direction quickly based on shifting company needs.

• Competitive starting salary
• A discretionary annual bonus
• Long-term incentive in the form of a new hire equity grant
• Comprehensive health plans
• 401K with company matching
• Paid Parental Leave
• Flexible time off

Salary Range: The base salary range for this role is between $120,000 - $150,000 in the State of New York, the State of California and the State of Washington. This range is not inclusive of our discretionary bonus or equity package. When determining a candidate’s compensation, we consider a number of factors including skillset, experience, job scope, and current market data.

At Gemini, we strive to build diverse teams that reflect the people we want to empower through our products, and we are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status. Equal Opportunity is the Law, and Gemini is proud to be an equal opportunity workplace. If you have a specific need that requires accommodation, please let a member of the People Team know.

#LI-AH1